On Monday, Paddy went to the Doc because he had had a bad headache over the weekend. When the Doc finished his examination, he told Paddy that he would have to take 4 tablets but must do them in order. "The first Green, next Blue, next Red, and then White. So first today, then skip Tuesday, Blue Wednesday, then skip Thursday, Red Friday then skip Saturday, and then White on Sunday. See you next Monday, but do not take the wrong tablets."

The next Monday, Paddy’s wife came to the Doc, and the Doc asks, "Were is Paddy?" His wife told him "Paddy’s dead." "O," said the Doc, "I told him not to get the tablets in the wrong order." "No," said the wife,"it was all that skipping that killed him."